Yyf severe has pulsing vibe!

How do I tune or fix this.

The same way you tune any other yoyo. There’s a handy guide here: http://yoyoexpert.com/forums/index.php/topic,9488.0.html

Yuki

Maybe try uscrewing and taking out the axle and just letting it sit for a day, I did this for my protostar and actually helped because I think it helped get rid some of the pressure